1. Product Overview
The SANSUI F81 is a versatile portable multimedia speaker designed for high-quality audio on the go. Featuring Bluetooth 5.3 connectivity, FM radio, and support for U disk and TF card playback, it offers multiple ways to enjoy your music. Its compact design, long-lasting battery, and built-in microphone for HD calls make it ideal for various indoor and outdoor scenarios.
2. Package Contents
Please check the package for the following items:
- SANSUI F81 Portable Speaker
- Charging Cable (Type-C)
- User Manual
- (May include other accessories depending on the specific package)
3. Device Layout and Controls
Familiarize yourself with the speaker's buttons and ports:
- Display Screen: Shows current mode, track number, volume, and battery status.
- Numeric Keys (0-9, *): Used for direct channel selection in FM mode or song selection in TF/U disk mode.
- Light Mode Key: Toggles or changes RGB lighting effects.
- Record Key: Initiates audio recording (requires TF card/U disk).
- Delete Key: Deletes recorded files.
- Set/Lock Key: Likely for FM station presets or other settings.
- V-/Previous Track Key: Decreases volume or skips to the previous track.
- V+/Next Track Key: Increases volume or skips to the next track.
- M0 (Mode Key): Switches between different playback modes (Bluetooth, FM, TF Card, U Disk, AUX).
- Play/Pause Key: Plays or pauses audio playback.
- Power Key/Call Key: Long press to power on/off. Short press to answer/end calls in Bluetooth mode.
4. Setup and First Use
4.1 Charging the Speaker
Before first use, fully charge the speaker. Connect the provided Type-C charging cable to the DC 5V port on the speaker and the other end to a USB power adapter (not included) or a computer USB port.
- The display will indicate charging status.
- A full charge provides approximately 3 hours of playback at 100% volume or 8 hours at 30% volume.
4.2 Power On/Off
- Power On: Long press the Power Key/Call Key () until the display lights up.
- Power Off: Long press the Power Key/Call Key again until the display turns off.
4.3 Bluetooth Pairing
- Power on the SANSUI F81 speaker. It will automatically enter Bluetooth pairing mode (indicated by a flashing Bluetooth icon on the display).
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "SANSUI F81" from the list of devices.
- Once connected, the speaker will emit a confirmation tone, and the Bluetooth icon on the display will stop flashing.
4.4 Connecting via AUX Input
To use the speaker as a wired audio output for devices like computers or MP3 players:
- Connect one end of a 3.5mm audio cable (not included) to the AUX port on the speaker.
- Connect the other end to the audio output jack of your device.
- The speaker will automatically switch to AUX mode or you may need to press the 'M0' (Mode) key to select AUX.
5. Operating Instructions
5.1 Mode Switching
Press the 'M0' (Mode) key repeatedly to cycle through the available modes: Bluetooth, FM Radio, TF Card, U Disk, and AUX.
5.2 Volume Control
- Volume Up: Short press the 'V+' key.
- Volume Down: Short press the 'V-' key.
5.3 Music Playback (Bluetooth/TF Card/U Disk)
- Play/Pause: Short press the Play/Pause key.
- Next Track: Long press the 'V+' key.
- Previous Track: Long press the 'V-' key.
- Direct Song Selection (TF/U Disk): In TF Card or U Disk mode, use the numeric keys to directly input the song number (e.g., for song 19, input '1' then '9').
5.4 FM Radio Operation
- Switch to FM Radio mode using the 'M0' key.
- Auto Scan: Long press the Play/Pause key to automatically scan and save available FM stations.
- Manual Tuning/Channel Selection: Use the 'V+' and 'V-' keys to navigate between saved stations. Alternatively, use the numeric keys to directly input a frequency (e.g., for 90.5 FM, input '9' then '0' then '5').
5.5 Hands-Free Calling
When connected via Bluetooth to your phone:
- Answer Call: Short press the Power Key/Call Key.
- End Call: Short press the Power Key/Call Key during a call.
- Reject Call: Long press the Power Key/Call Key when an incoming call rings.
5.6 RGB Lighting Control
Press the Light Mode Key to cycle through different RGB lighting effects or turn them off.
5.7 Recording Function
To use the recording function, ensure a TF card or U disk is inserted.
- Start Recording: Short press the Record Key.
- Stop Recording: Short press the Record Key again.
- Playback Recording: Navigate to the recorded files on your TF card/U disk.
- Delete Recording: Use the Delete Key to remove unwanted recordings.
6. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the speaker. Do not use abrasive cleaners or solvents.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even if not in use for extended periods.
- Water Resistance: This speaker is NOT waterproof. Avoid exposure to water or high humidity.
7. Troubleshooting
- No Power: Ensure the battery is charged. Connect the charging cable and try again.
- No Sound: Check the volume level on both the speaker and your connected device. Ensure the correct mode is selected.
- Bluetooth Disconnection/Cannot Pair: Make sure the speaker is within the 10m wireless range. Turn off and on Bluetooth on both devices, then try pairing again. Clear previous pairings if necessary.
- FM Radio Static: Try repositioning the speaker to improve signal reception.
- TF Card/U Disk Not Reading: Ensure the card/disk is inserted correctly and contains supported audio formats (APE, FLAC, WAV, MP3).
8. Specifications
| Feature | Specification |
|---|---|
| Model | SANSUI F81 |
| Dimensions (L x W x H) | 130mm x 49mm x 71.8mm |
| Weight | 353g |
| Battery Capacity | 1200mAh |
| Bluetooth Version | 5.3 |
| Maximum Wireless Range | <10m |
| Input Power | <25 W (DC 5V/1A) |
| Peak Power | 15W |
| Speaker Size | 2.0 inch (Full-Range) |
| Audio Crossover | Full-Range |
| Number of Loudspeaker Enclosure | 1 |
| Channels | 2 (2.0) |
| Sensitivity | 75dB |
| Total Harmonic Distortion | 0.5% |
| Frequency Response | 100Hz-18KHz |
| Communication | AUX, USB, Bluetooth, Audio Line |
| Playback Function | Radio, MP3, FLAC, APE, WAV |
| Support Memory Card | Yes |
| Cabinet Material | Plastic |
| Power Source | AC, Battery |
| Certification | CE |
9. User Tips
- Portability: The speaker weighs only 350g and includes an integrated silicone lanyard, making it easy to carry on a backpack or by hand for outdoor activities.
- Versatile Audio: Utilize the AUX input to instantly transform the speaker into a desktop audio solution for your computer or other devices, enhancing your listening experience.
- Optimized Sound: The 52mm full-range speaker combined with a dedicated bass diaphragm delivers powerful and clear audio, suitable for both indoor and outdoor environments.
- Extended Playtime: For longer battery life, consider playing music at moderate volumes (around 30%) to achieve up to 8 hours of continuous playback.
10. Product Demonstration Video
Watch this video for a visual guide on the SANSUI F81's features and operation, including its RGB lighting effects and button functions.
11. Warranty and Support
For warranty information, technical support, or any product-related inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
